Manufacture of articles from fibrous pulp.



per end of-sleeve 0.

UNITED STATES Patented February 14, 1905.

PATENT OFFICE.

CALEB H. VALENTINE, OF ALLENTOWN, PENNSYLVANIA, ASSIGNOR TO THEVALENTINE FIBRE WARE COMPANY, OF ALLENTOVVN,

PENNSYLVANIA.

MANUFACTURE OF ARTICLES FROM FIBROUS PULP.

SPECIFICATION forming part of Letters Patent No. 782,371, dated February14, 1905.

Application filed June 24, 1903. Serial No. 162,830-

To all whom it may concern:

Be it known that I, CALE H. VALENTINE, a citizen of the United States,and a resident of Allentown, in the county of Lehigh and State ofPennsylvania, have made a certain new and useful Invention inManufacture of Articles from Fibrous Pulp; and I declare the follow.-ing to be a full, clear, and exact description of the same, such as willenable others skilled in the art to which it appertains to make and usethe invention, reference being had to the accompanying drawings.

The invention has relation to the manufacture of articles from pulp, andhas for its object the formation of articles of various kinds from thefibrous pulp of paper, wood, manila, or stock of like character in suchmanner as to draw out the fibers of the material as the article isformed, so that such fibers will lie smoothly and closely and thearticle formed will have a structure of a laminated and tough nature.

With this object in view the invention consists in the novel process ofmanufacture and product, as hereinafter set forth.

Referring to the accompanying drawings, the letter a designates a tankfor the pulp, carrying a mold base or bottom b,having marginalcentering-lugs b for the mold proper and pulp-admission openings 6Mounted within the sleeve 5 central of base 6 is the rotary sleeve a,carrying at its lower end portion the loose belt-pulley 0', having aclutch connection 0 with the sleeve 0. This clutch connection consistsof depending rods 0 upon pulley 0, such rods engaging spring-arms 0,carried by collar" 0', fixed to sleeve 0, said spring-arms bearing attheir lower extremi ties upon collar cl of valve-rod (i, such rodextending centrally through sleeve 0 and carrying the valve 0, arrangedto close the up- A tension-spring f bears against the closed lower endof sleeve 0 and against collar f of the valve-rod, with the result thatvalve 6 is'opened when the springarms are disengaged from collar d,releasing the valve-rod.

The agitator or stirrer g, which conforms to the shape of the mold, iscarried at the upper end portion of sleeve 0.

A stationary hollow shaft or piston-rod h depends from framework It andhas a waterpipe connection 7112, provided with valve its, such valvebeing opened upon upward movement of the valve-rod (Z owing toengagement of operating-arm 72; with collar d of the rod 01. Thepiston-rod It has piston-head it at its lower end, water-exit openings71 being provided in the piston-rod adjacent to such piston. dis areciprocatory water-cylinder movable in guideways a" and in which saidstationary rod 7t and piston-head if are located, such cylinder and rodbeing of sufficient length to allow proper withdrawal of the moldcarried thereby. This mold consists of an inclosure 1', open at thebottom to receive the stirrer g and closed at the-top, which has asuction-pipe connection such pipe being at its upper end fixed to andcarried by the cylinder iand having a suction-hose connected thereto.The mold has in its interior a wirecloth form through which the exhaustacts,

drawing thewater of the pulp mixture through the wire-cloth,suction-pipe, and suction-hose aforesaid and leaving the deposit offiber on the inner surface of said wire-cloth. The special constructionand operation of the mold is set forth in my patent bearing date June25, 1901, and numbered 677,330.

In operation the pulp-mold jis lowered (by allowing the water incylinder 21 to escape) upon the agitator or stirrer g, which fitstherein, such stirrer having blades 9, which have a parallel relation tothe sides of the wirecloth form. Under rotation of the stirrer throughbelt-wheel 0 the pulp is stirred up and kept in regular motion aroundthe mold andnear the same, thereby distributing the fibers in a closemanner parallel to each other and to the concave surfaces of the articleformed, with the result of forming a tough and laminated article ofsmooth appearance, the fibers being evenly deposited. Also the articlesformed will be of even thickness, as the stirrer-blades are set for suchthickness, and when it is reached, through the friction created by thestirrer-blades against the sides of the article being formed the dragupon belt-pulley 0 will be such that its depending rods 0 will press thespring-arms c of sleeve 0 outwardly, releasing the valve-rod andadmitting air into the mold. At the same time the valve 7& in Water-pipeit will be opened, admitting Water to cylinder 7: and raising the moldfrom the agitator or stirrer. A second operating rod or handle for valveIf is shown at b.

h is a waste-pipe for pipe 7L2.

Having described the invention, what I claim, and desire to secure byLetters Patent,

1. In the manufacture of articles from pulp, the process of exhaustingthe Water of the pulp through a perforated form, stirring the pulp in amanner parallel and adjacent to the sides of the form, relieving theexhaust, and raising the form from the pulp, substantially as specified.

2. In the manufacture of articles from pulp, the process of exhaustingthe water of the pulp through a perforated form, stirring the theprocess of exhausting the water of the pulp through a perforated form,stirring the pulp, and automatically relieving the exhaust,

stopping the stirring action, and raising the form from the pulp, uponthe completion of the article, substantially as specified.

4. In the manufacture of articles from pulp, the process of exhaustingthe Water of the pulp through a perforated form, stirring the pulp in amanner parallel and adjacent to the sides of the form, and automaticallyrelieving the exhaust, and raising the form from the pulp upon thecompletion of the thickness of the article, substantially asspecified.

In testimony whereof I aflix my signature in presence of two Witnesses.

CALEB H. VALENTINE.

Witnesses:

D. J. NAGLE, MoRRrs HOATS.

